import axios from 'axios'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import { getToken } from '@/utils/auth'

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 5000 // request timeout
})

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent

    if (store.getters.token) {
      // let each request carry token
      // ['X-Token'] is a custom headers key
      // please modify it according to the actual situation
      config.headers['Authorization'] = 'Bearer ' + getToken()
    }
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
  */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    const res = response.data

    // if the custom code is not 20000, it is judged as an error.
    if (res.status_code !== 200) {
      Message({
        message: res.message || 'Error',
        type: 'error',
        duration: 2000
      })

      
      return Promise.reject(new Error(res.message || 'Error'))
    } else {
      return res
    }
  },
  error => {
    if (error && error.response) {

      console.log(error.response) // 调试
      // 401:令牌过期;  重新登陆
      if (error.response.status === 401) {
        Message({
          message: error.response.data.message,
          type: 'error',
          duration: 2000
        })
        setTimeout(() => {
          store.dispatch('user/resetToken');
          
          //跳转登录页面
          router.push({ path: `/login?redirect=${router.currentRoute.fullPath}` })
        }, 2000);

      } else{
        Message({
          message: error.message,
          type: 'error',
          duration: 2000
        })
      }
    }
    return Promise.reject(error)
  }
)

export default service
